I have just noticed a thing called Nepomuk lurking, nay cowering, in my Systems Tools drop down menu. There is a Nepomuk Backup and a Nepomuk File Indexing Controller.
How long it has lurked, or even cowered, I know not. Neither do I know what it is. I can not find it in Synaptic Packager Manager and so I suppose it is Non Standard issue in some form or other.
Is it a friendly beast or is it likely to bite?

Thank you once again for coming to my aid, sir.
It looks to me as though it may well be just a tad too "advanced" for my simple needs.
I have had a look in SystemSettings but it seems as though none of the items in there lead to it.

This is all very confusing. My underestanding of what you both say leads me to think that this Nepomuc is strictly a KDE linked entity.
A search through Synaptic Package Manager shows that I have the following onboard:-